大约有 47,000 项符合查询结果（耗时：0.0930秒） [XML]
How to create an array containing 1…N
...oking for, why do you need an array? A simple var n = 45; and then looping from 1..n would do.
– casablanca
Sep 19 '10 at 18:33
3
...
Relative imports in Python 3
I want to import a function from another file in the same directory.
13 Answers
13
...
Calling clojure from java
Most of the top google hits for "calling clojure from java" are outdated and recommend using clojure.lang.RT to compile the source code. Could you help with a clear explanation of how to call Clojure from Java assuming you have already built a jar from the Clojure project and included it in the cl...
What is the difference between tree depth and height?
This is a simple question from algorithms theory.
The difference between them is that in one case you count number of nodes and in other number of edges on the shortest path between root and concrete node.
Which is which?
...
How to extract the n-th elements from a list of tuples?
I'm trying to obtain the n-th elements from a list of tuples.
7 Answers
7
...
How to port data-only volumes from one host to another?
...estore, or migrate data volumes":
BACKUP:
sudo docker run --rm --volumes-from DATA -v $(pwd):/backup busybox tar cvf /backup/backup.tar /data
--rm: remove the container when it exits
--volumes-from DATA: attach to the volumes shared by the DATA container
-v $(pwd):/backup: bind mount the curren...
Efficient way to remove keys with empty strings from a dict
... +1. It's important to note that this does not actually remove the keys from an existing dictionary. Rather, it creates a new dictionary. Usually this is exactly what someone wants and is probably what the OP needs, but it is not what the OP asked for.
– Steven Rumbalski
...
Scala 2.8 breakOut
...efinition of map:
def map[B, That](f : (A) => B)(implicit bf : CanBuildFrom[Repr, B, That]) : That
Note that it has two parameters. The first is your function and the second is an implicit. If you do not provide that implicit, Scala will choose the most specific one available.
About breakOu...
Get protocol + host name from URL
In my Django app, I need to get the host name from the referrer in request.META.get('HTTP_REFERER') along with its protocol so that from URLs like:
...
Should I inherit from std::exception?
...ecommend that application-specific exception classes in C++ should inherit from std::exception . I'm not clear on the benefits of this approach.
...